Original Sin is the worst and most evil doctrine that has EVER corrupted the church. It has led to many other false doctrines like baptismal regeneration, the Immaculate Conception, and yes, CALVINISM. Many thousands, perhaps millions of Christians have died because of this false doctrine.
But the worst error is that it denies that Jesus truly came in the flesh. The Bible specifically warns about this error.
1 Jhn 4:1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
You are correct Jesus the Christ came in the flesh.
What does that mean? Well it means that Jesus was made a little lower than the angels, for the very purpose to be able to die. Heb 2:9 But we see Jesus, who was made a little lower than the angels
for the suffering of death,
We will come back to that.
But one in a certain place testified, saying, What is man, that thou art mindful of him? Thou madest him a little lower than the angels; Heb 2:6-7 Why?
So that he would be subject to death. That man was Adam and he was created flesh and blood , with temporary life by the spirit of the breath of life breathed into his nostrils, transferred to his blood in the lungs. The life, which is the soul BTW, of the flesh is in the blood. Lev 17:11 The Christ would pour out his soul unto death. He did this when he said, Father into
your hands I commend my spirit. The life returned to the Father, God who had given it, when he was conceived in the virgin Mary and she brought him forth to breath on his own. Jesus the Christ the Son of the living God was dead. The very death that came to Adam when he was 730 years old because he had been cut off from the tree of life when he ate of the tree of the knowledge of good and evil. The same death assigned to Adam for sin came to the sinless Christ by way of the flesh after he had lived about thirty three years. Christ died for us. He also died for Adam. Jesus the Christ was obedient unto that death, no one took his life. He gave his life. It was not an easy thing for him to do. He even asked his Father if there was any other way, nevertheless not as I will, but as thou wilt.Matt 26:39 He went to the disciples and they were asleep and he returned again to the spot of prayer still in agony over dying, even sweated drops of blood Luke 22:44 and prayed a second time Matt 26:42 saying, O my Father, if this cup may not pass away from me, except I drink it, thy will be done.
Heb 5:7,8 says through this he
learned obedience. Phil 2:8 says he
became obedient unto death.
It was not cut and dried. That is the reason the promise of God made before time begin was, the
hope of eternal life, the promise made when it was foreordained for the Christ as of a lamb without spot or blemish would shed his blood for redemption.
Had the Christ not learned and become obedient unto death even the death of the cross, because he was made a little lower than the angels, he would have died but he would not have died for
our sin but for his disobedience, and his Father would not have given him the promise of God.
Faith would not have come and we would be dead and or die in the flesh in our sins, never to see life again.
To enter, see, and or inherit the kingdom of God the living soul Adam, flesh and blood, would have to be born again. He would have to become as the last Adam who was made quickening Spirit, however (Speaking of Jesus the Christ)
that was not first which is spiritual, but that which is natural; and
afterward that which is spiritual. 1 Cor 15:44,45
Without being obedient unto death and being resurrected from the dead Jesus the Christ would not have become spiritual, a quickening Spirit.
Adam brought death to all men including the Christ.
Through the resurrected Christ life can be given to all men.
BTW death was appointed to all men before the foundation of the world being it was foreordained at that time the Christ would die.
Afterwards the judgement.
All flesh and blood, from the youngest to the oldest; All.
And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith: Phil 3:9
Does your believing something bring that righteousness or does it come by the obedient shedding of the blood of the Christ, as of a lamb without spot and without blemish?
BEY these lusts that we become evil. Jesus never did this. But he felt them just as strongly as you and I, perhaps far more.